Straw N-halamines: Evaluation in single and multistage filtration systems

► Cellulose based N-halamines were evaluated against water microorganism. ► This was performed using single and multi-stage filtration systems. ► They showed comparable results to synthetic polymers from the same category. ► Particles size, flow rate and modification method affected the biocidal act...

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Bibliographic Details
Published in:Carbohydrate polymers 2013-02, Vol.92 (2), p.1934-1941
Main Authors: Ahmed, Abd El-Shafey I., Cavalli, Gabriel, Bushell, Michael E., Wardell, John N., Pedley, Steve, Charles, Katarina, Hay, John N.
Format: Article
Language:English
Subjects:
Alginates - chemistry
Amines - chemistry
Amines - isolation & purification
Amines - pharmacology
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - isolation & purification
Anti-Bacterial Agents - pharmacology
anti-infective properties
Antiviral Agents - chemistry
Antiviral Agents - isolation & purification
Antiviral Agents - pharmacology
Applied sciences
Bacteria
Bacteria - drug effects
bacteriophages
Calcium Chloride - chemistry
Cellulose
Cellulose and derivatives
Drinking water and swimming-pool water. Desalination
Escherichia coli
Exact sciences and technology
Filters
filtration
Filtration - methods
Glucuronic Acid - chemistry
Gram-positive bacteria
Halogens - chemistry
Hexuronic Acids - chemistry
N-halamine
Natural polymers
Oryza - chemistry
particle size
Physicochemistry of polymers
Pollution
polymers
rice straw
Staphylococcus aureus
Straw
Viruses
Viruses - drug effects
Water - chemistry
water treatment
Water treatment and pollution
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Summary:► Cellulose based N-halamines were evaluated against water microorganism. ► This was performed using single and multi-stage filtration systems. ► They showed comparable results to synthetic polymers from the same category. ► Particles size, flow rate and modification method affected the biocidal activity. New N-halamines (I-Cl and II-Cl) based on cellulose extracted from rice straw have been evaluated in single and multistage filtration systems against bacteria and viruses. Escherichia coli and Staphylococcus aureus were used as examples of Gram-negative and Gram-positive bacteria respectively while PRD1 bacteriophage was used as an example for viruses. II-Cl has achieved 9 log reductions in viable counts against E. coli in 2h and S. aureus in 1h while it has achieved 7 log reductions against PRD1 in 5h. The particle size of prepared materials was modified as well as the flow rate through the filtration systems. The antimicrobial activity of modified cellulose was proved to be comparable to some synthetic biocidal polymers from the same type in similar water treatment systems.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2012.11.036